EP 0544886 B1 19970910 - METHOD OF EXTRACTING SENNOSIDES A, B and A1
Title (en)
METHOD OF EXTRACTING SENNOSIDES A, B and A1
Title (de)
VERFAHREN ZUR GEWINNUNG DER SENNOSIDE A, B UND A1
Title (fr)
PROCEDE D'EXTRACTION DES SENNOSIDES A, B et A1
Publication
Application
Priority
- DE 4120991 A 19910625
- EP 9201428 W 19920624
Abstract (en)
[origin: WO9300350A1] The invention concerns a method of extracting sennosides A, B and A1. The method comprises the following steps: a sennoside mixture is reduced to the corresponding anthrone-8-glucosides, the aloe-emodin components are removed by liquid-liquid separation of the anthrone-8-glucosides, and the rheine-9-anthrone-8-glucoside obtained after the separation step is oxidized again to sennosides A, B and A1. The invention also concerns sennosides A, B and A1 obtained by this method and pharmaceutical agents containing them.
IPC 1-7
IPC 8 full level
A61K 31/70 (2006.01); A61K 31/7028 (2006.01); A61K 31/7034 (2006.01); A61K 31/704 (2006.01); A61K 36/48 (2006.01); A61K 36/482 (2006.01); A61P 1/10 (2006.01); C07H 15/244 (2006.01)
CPC (source: EP)
A61P 1/10 (2017.12); C07H 15/244 (2013.01)
Citation (examination)
- GB 2018488 A 19791017 - TDK ELECTRONICS CO LTD
- GB 1135528 A 19681204 - NATTERMANN A & CIE
- GB 555450 A 19430824 - SANDOZ LTD
- Fortschritte der Chemie organischer Naturstoffe, Band. 599, 1950 A. Stoll et al.: "Sennosides A and B, the Active Principles of Senna ", see page 248 - 269
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE
DOCDB simple family (publication)
WO 9300350 A1 19930107; AT E157984 T1 19970915; AU 2165492 A 19930125; AU 662343 B2 19950831; CA 2090340 A1 19921226; CA 2090340 C 19980818; CZ 281687 B6 19961211; CZ 37093 A3 19961211; DE 4120991 A1 19930107; DE 59208889 D1 19971016; DK 0544886 T3 19971013; EP 0544886 A1 19930609; EP 0544886 B1 19970910; ES 2110000 T3 19980201; FI 104902 B 20000428; FI 930790 A0 19930223; FI 930790 A 19930223; GR 3024842 T3 19980130; HU 210198 B 19950228; HU 9300506 D0 19930528; HU T64007 A 19931129; IE 922048 A1 19921230; JP 2705733 B2 19980128; JP H06502191 A 19940310; PL 173870 B1 19980529; PL 298140 A1 19931102; RU 2104281 C1 19980210; SK 23493 A3 19930707; ZA 924646 B 19930331
DOCDB simple family (application)
EP 9201428 W 19920624; AT 92913646 T 19920624; AU 2165492 A 19920624; CA 2090340 A 19920624; CZ 37093 A 19930624; DE 4120991 A 19910625; DE 59208889 T 19920624; DK 92913646 T 19920624; EP 92913646 A 19920624; ES 92913646 T 19920624; FI 930790 A 19930223; GR 970402481 T 19970924; HU 9300506 A 19920624; IE 922048 A 19920701; JP 50133392 A 19920624; PL 29814092 A 19920624; RU 93004900 A 19920624; SK 23493 A 19920624; ZA 924646 A 19920624